CN102560318A - Wear-resistant anti-corrosion electric arc spraying cored wire for protecting surface of copper matrix - Google Patents
Wear-resistant anti-corrosion electric arc spraying cored wire for protecting surface of copper matrix Download PDFInfo
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- CN102560318A CN102560318A CN2010105854611A CN201010585461A CN102560318A CN 102560318 A CN102560318 A CN 102560318A CN 2010105854611 A CN2010105854611 A CN 2010105854611A CN 201010585461 A CN201010585461 A CN 201010585461A CN 102560318 A CN102560318 A CN 102560318A
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Abstract
The invention relates to a wear-resistant anti-corrosion electric arc spraying cored wire for protecting the surface of a copper matrix and a preparation method and mainly solves the technical problems that in the existing spraying method for prolonging the service life of a tuyere small sleeve, the combination strength is low, a coating is easy to fall off, the mechanical impact resistance is poor and in the using process of the tuyere small sleeve, the heat conduction capacity of a tuyere is gradually reduced, the temperature of the tuyere wall is gradually risen and the melting loss is easy to generate. The invention adopts the technical scheme that the wear-resistant anti-corrosion electric arc spraying cored wire for protecting the surface of the copper matrix is characterized in that a sheath of the cored wire is a copper aluminium alloy belt, wherein the content of aluminium is 2 to 4 percent of mass of the alloy belt; and powder of the cored wire comprises the following ingredients in percentage by mass: 1 to 2 percent of metal chromium, 0.5 to 2 percent of metal zirconium, 0.1 to 1 percent of metal silver and the balance metal copper. The wear-resistant anti-corrosion electric arc spraying cored wire for protecting the surface of the copper matrix is mainly used for the erosion wear resistance of the surface of the tuyere small sleeve of a blast furnace and is low in cost.
Description
Technical field
The present invention relates to a kind of copper matrix surface that is used for and protect with wear-and corrosion-resistant arc spraying powder core wire material and preparation method, be mainly used in the wearing and tearing of blast furnace tuyere small sleeve surface erosion-resistant, cost is low.
Background technology
Since 19th century, modern blast furnace ironmaking produced, tuyere small sleeve was that blast furnace is produced necessary key part always.The length in its work-ing life directly has influence on safety, low consumption, the direct motion and efficient that blast furnace is produced.For big-and-middle-sized blast furnace, every blast furnace has 14～40 air ports, and be 2～3 months its mean life, and a plurality of air ports are arranged on the blast furnace, and a blast furnace was changed air port 6～9 times in average every month.There are hundreds of blast furnaces in China, because of frequent change air port damping down causes producing less every year the up to a million tons of pig iron, reduces nearly 1,000,000,000 yuan of the output value, therefore, prolongs air port work-ing life, improves the economic and social benefits, and becomes the problem that present blast furnace presses for solution.
Because the fine copper thermal conductivity is good, good water-cooling effect, present domestic blast furnace tuyere small sleeve is mostly by the fine copper manufacturing.But fine copper wear resisting property, resistance to elevated temperatures, antioxidant property are not good, and tuyere small sleeve mainly damages with three kinds of modes: 1) damaged by the slag iron corrode in the blast furnace; 2) oxidation of tuyere small sleeve front surface be full of cracks and wearing and tearing; 3) coal dust wash away erosion, mean lifetime has only 2～3 months.Can strengthen through the surface and reach the purpose that improves the fine copper tuyere small sleeve life-span.
The subject matter of the spraying method at present common raising blast furnace tuyere small sleeve work-ing life is that the coated substrate bonding strength is low; Coating is prone to come off, and mechanical shock resistance is poor, and in use causes the capacity of heat transmission in air port to descend gradually; The air port wall temperature constantly rises, and is prone to take place melting loss.Urgent need finds a kind of spray material to solve the problem that exists in the aforesaid method.
Summary of the invention
The object of the invention is providing a kind of copper matrix surface that is used for to protect with wear-and corrosion-resistant arc spraying powder core wire material and preparation method; The bonding strength that mainly solves existing spraying raising tuyere small sleeve life-span existence is low; Coating is prone to come off, and mechanical shock resistance is poor, and in use causes the capacity of heat transmission in air port to descend gradually; The air port wall temperature constantly rises, and is prone to take place the technical problem of melting loss.The present invention is when improving tuyere small sleeve surface hardness, high temperature resistant, corrosion-resistant, anti abrasive performance, and it is poor to solve strengthening layer and matrix bond, reduces the problem of copper matrix thermal conductivity.
Technical scheme of the present invention is: it is 2～4% xaloy band that wear-and corrosion-resistant arc spraying powder core wire material, the quality percentage composition that described powder cored filament material crust is an aluminium are used in the protection of copper matrix surface, and described powder cored filament material medicinal powder composition quality percentage composition is following:
Chromium metal: 1～2%, metal zirconium: 0.5～2%, argent: 0.1～1%, surplus: metallic copper.
Wherein various composition effects are following:
Xaloy: in the heat treatment process after spraying; Under nitrogen atmosphere, utilize the oxygen that obtains in the spraying process, make aluminium generation selective oxidation in the xaloy; Original position generates the alumina particle that disperse distributes, and forms the copper alloy of alumina particle dispersion-strengthened.Resulting alumina particle is tiny, be evenly distributed; Stop the motion of dislocation in matrix; Play good dispersion-strengthened action, improve coating hardness and softening temperature greatly, and strengthening layer has higher heat conductivity; And do not influence the thermal conductivity of air port matrix, obtained high performance strengthening layer.And aluminium content is 2～4wt% in the xaloy, and the alumina content that generates so can be too not high and then influence the heat conductivility of material, also can be too not low and the effect of reduction dispersion-strengthened.
Chromium metal, zirconium: the solidity to corrosion that increases coating; Chromium, zirconium can form supersaturated solid solution in copper, intensity and pure copper by comparison increase, through ageing treatment; Supersaturated solid solution is decomposed, and alloying element is separated out with a definite form, and disperse is distributed in and forms precipitated phase in the matrix; Precipitated phase stops the motion of crystal boundary and dislocation effectively; Alloy strength is increased greatly, and simultaneously, second lattice distortion that causes mutually that deposition is separated out is to little many of the scattering process that the scattering process of electronics causes than solid solution atom in the copper matrix; Alloy can obtain higher heat conductivity behind precipitation, so just improves hardness, the wear resisting property of coating simultaneously in the thermal conductivity of little effect copper.The chromium solubleness in copper at normal temperatures is 0.1wt%; If the content of chromium is lower than 0.1wt% and then can not causes the precipitation strength effect, but along with the increase of chromium content, when surpassing 2%; The party aggravation gradually partially of the segregation of alloy inner element and composition, this will influence the heat conductivility of material.Zirconium solubleness in copper when normal temperature is 0.05wt%, and the interpolation of trace zirconium increases precipitating reinforcing effect, and can promote the uniform distribution of zirconium, but adds the decline that too much can cause the material thermal conductivity ability equally.
Argent: silver is very little to the thermal conductivity influence of copper, and can effectively improve the intensity and the hardness of coating, increases the oxidation-resistance of coating.Because the solubleness of argent in copper is 0.1% when normal temperature, the add-on of silver is lower than the effect that can not well play the intensity that improves coating at 0.1% o'clock, but the too high heat conductivility that then can reduce material of add-on of silver.
The protection of copper matrix surface is adopted prior art with wear-and corrosion-resistant arc spraying powder core wire material preparation method, may further comprise the steps:
1, the xaloy band is rolled into U-shaped, again 32～38% of adding Spray Wire gross weight of the present invention powder core powder of the present invention in U-lag;
2, U-lag is healed up, the powder core is wrapped in wherein,,, make its diameter reach 2mm at last, obtain the finished product by road drawing, tube reducing through wortle.
Beneficial effect of the present invention: arc spraying powder core wire material of the present invention is a copper alloy, and resultant sprayed coating and matrix all are copper alloy, so sprayed coating and matrix wettability are good, bonding strength is high.Can between strengthening layer and the matrix diffusion welding take place, further improve strengthening layer and high base strength in heat treated process.Can reach hardness HV >=200 through the copper matrix surface arc spraying coating performance of above processing, softening temperature >=800 ℃, bonding strength >=50MPa; 70% of thermal conductivity >=fine copper, wear resisting property, resistance to elevated temperatures, antioxidant property increase substantially.Technology of the present invention is simple, and cost is low, and production efficiency is high, is fit to scale operation.
Embodiment
Embodiment 1
Surrounding layer is selected wide 10mm for use, and the xaloy band of thick 0.2mm (the quality percentage composition of aluminium is 2%) is processed the powder cored filament material of Ф 2mm, and powder core filling ratio is 32%.Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 1%; Metal zirconium: 0.5%; Argent: 0.1%; Metallic copper: 98.4%.
The powder cored filament material of processing by above-mentioned standard through electric arc spraying in the fine copper matrix, the sprayed coating that forms through bakingout process again, HV hardness is 215, softening temperature is 805 ℃, bonding strength 60MPa, thermal conductivity is 86% of a fine copper.
Embodiment 2
Surrounding layer is selected wide 10mm for use, and the xaloy band of thick 0.2mm (the quality percentage composition of aluminium is 2.5%) is processed the powder cored filament material of Ф 2mm, and powder core filling ratio is 34%.Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 1.2%; Metal zirconium: 0.8%; Argent: 0.3%; Metallic copper: 97.7%.
The powder cored filament material of processing by above-mentioned standard through electric arc spraying in the fine copper matrix, the sprayed coating that forms through bakingout process again, HV hardness is 229, softening temperature is 806 ℃, bonding strength 57MPa, thermal conductivity is 84% of a fine copper.
Embodiment 3
Surrounding layer is selected wide 10mm for use, and the xaloy band of thick 0.2mm (the quality percentage composition of aluminium is 3%) is processed the powder cored filament material of Ф 2mm, and powder core filling ratio is 35%.Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 1.5%; Metal zirconium: 1%; Argent: 0.5%; Metallic copper: 97%.
The powder cored filament material of processing by above-mentioned standard through electric arc spraying in the fine copper matrix, the sprayed coating that forms through bakingout process again, HV hardness is 243, softening temperature is 810 ℃, bonding strength 54MPa, thermal conductivity is 82% of a fine copper.
Embodiment 4
Surrounding layer is selected wide 10mm for use, and the xaloy band of thick 0.2mm (the quality percentage composition of aluminium is 3%) is processed the powder cored filament material of Ф 2mm, and powder core filling ratio is 36%.Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 1.5%; Metal zirconium: 1%; Argent: 0.5%; Metallic copper: 97%.
The powder cored filament material of processing by above-mentioned standard through electric arc spraying in the fine copper matrix, the sprayed coating that forms through bakingout process again, HV hardness is 253, softening temperature is 812 ℃, bonding strength 52MPa, thermal conductivity is 79% of a fine copper.
Embodiment 5
Surrounding layer is selected wide 10mm for use, and the xaloy band of thick 0.2mm (the quality percentage composition of aluminium is 4%) is processed the powder cored filament material of Ф 2mm, and powder core filling ratio is 37%.Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 1.5%; Metal zirconium: 1%; Argent: 0.5%; Metallic copper: 97%.
The powder cored filament material of processing by above-mentioned standard through electric arc spraying in the fine copper matrix, the sprayed coating that forms through bakingout process again, HV hardness is 260, softening temperature is 820 ℃, bonding strength 52MPa, thermal conductivity is 75% of a fine copper.
Embodiment 6
Surrounding layer is selected wide 10mm for use, and the xaloy band of thick 0.2mm (the quality percentage composition of aluminium is 4%) is processed the powder cored filament material of Ф 2mm, and powder core filling ratio is 38%.Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 2%; Metal zirconium: 2%; Argent: 1%; Metallic copper: 95%.
The powder cored filament material of processing by above-mentioned standard through electric arc spraying in the fine copper matrix, the sprayed coating that forms through bakingout process again, HV hardness is 262, softening temperature is 830 ℃, bonding strength 51MPa, thermal conductivity is 73% of a fine copper.
In the fine copper matrix, the coating performance that obtains is excellent, satisfies the blast-furnace tuyere performance requriements fully through electric arc spraying for the powder cored filament material of processing according to the present invention.Draw from experiment, aluminium quality percentage composition is 3% in outer xaloy band, and powder core filling ratio is 35%; Powder cored filament material Chinese medicine powder composition quality percentage composition: chromium metal 1.5%; Metal zirconium is 1%, and argent is 0.5%, and metallic copper is that 97% o'clock performance is best; The hardness of coating, softening temperature are all higher, and thermal conductivity also can meet the demands simultaneously.Adopt coating performance that this composition obtains and common chromium zirconium copper air port performance comparison following:
Claims (2)
1. the wear-and corrosion-resistant arc spraying powder core wire material is used in the protection of copper matrix surface; It is characterized in that quality percentage composition that described powder cored filament material crust is an aluminium is 2～4% xaloy band; Described powder cored filament material medicinal powder composition quality percentage composition is following: chromium metal: 1～2%; Metal zirconium: 0.5～2%, argent: 0.1～1%, surplus: metallic copper.
2. the wear-and corrosion-resistant arc spraying powder core wire material is used in copper matrix surface protection according to claim 1; It is characterized in that aluminium quality percentage composition is 3% in the xaloy band; Powder cored filament material Chinese medicine powder composition quality percentage composition is following: chromium metal 1.5%; Metal zirconium is 1%, and argent is 0.5%, and metallic copper is 97%.
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| CN2010105854611A CN102560318B (en) | 2010-12-10 | 2010-12-10 | Wear-resistant anti-corrosion electric arc spraying cored wire for protecting surface of copper matrix |
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| CN2010105854611A CN102560318B (en) | 2010-12-10 | 2010-12-10 | Wear-resistant anti-corrosion electric arc spraying cored wire for protecting surface of copper matrix |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150143972A1 (en) * | 2013-11-26 | 2015-05-28 | Ernie Ball, Inc. | Aluminum copper wrap wire for musical instruments |
| CN104937140A (en) * | 2013-01-23 | 2015-09-23 | 贺利氏德国有限责任两合公司 | Coated wire for bonding applications |
| CN107794324A (en) * | 2016-08-31 | 2018-03-13 | 鞍钢股份有限公司 | High-wearing feature blast furnace copper cooling stave and preparation method |
| CN108546906A (en) * | 2018-05-29 | 2018-09-18 | 苏州乔纳森新材料科技有限公司 | A kind of Nano-composite powder core wire and preparation method thereof being used to prepare cutter coat |
| CN108588623A (en) * | 2018-05-29 | 2018-09-28 | 苏州乔纳森新材料科技有限公司 | A kind of Nano-composite powder core wire and preparation method thereof being used to prepare heat insulation coating |
| CN108677126A (en) * | 2018-05-29 | 2018-10-19 | 苏州乔纳森新材料科技有限公司 | A kind of aluminium-based amorphous alloy Nano-composite powder core wire and preparation method thereof |
| CN108707857A (en) * | 2018-05-29 | 2018-10-26 | 苏州乔纳森新材料科技有限公司 | A kind of Nano-composite powder core wire and preparation method thereof being used to prepare antibacterial wear-resistant coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104937140A (en) * | 2013-01-23 | 2015-09-23 | 贺利氏德国有限责任两合公司 | Coated wire for bonding applications |
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| CN107794324A (en) * | 2016-08-31 | 2018-03-13 | 鞍钢股份有限公司 | High-wearing feature blast furnace copper cooling stave and preparation method |
| CN108546906A (en) * | 2018-05-29 | 2018-09-18 | 苏州乔纳森新材料科技有限公司 | A kind of Nano-composite powder core wire and preparation method thereof being used to prepare cutter coat |
| CN108588623A (en) * | 2018-05-29 | 2018-09-28 | 苏州乔纳森新材料科技有限公司 | A kind of Nano-composite powder core wire and preparation method thereof being used to prepare heat insulation coating |
| CN108677126A (en) * | 2018-05-29 | 2018-10-19 | 苏州乔纳森新材料科技有限公司 | A kind of aluminium-based amorphous alloy Nano-composite powder core wire and preparation method thereof |
| CN108707857A (en) * | 2018-05-29 | 2018-10-26 | 苏州乔纳森新材料科技有限公司 | A kind of Nano-composite powder core wire and preparation method thereof being used to prepare antibacterial wear-resistant coating |
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